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Step-by-step guide to configure Proxmox Web GUI/API with Let’s Encrypt certificate and automatic validation using the ACME protocol in DNS alias mode with DNS TXT validation redirection to Duck DNS.

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Objective

We want to use a certificate in Proxmox GUI/API issued for free by a Certificate Authority trusted by default in browsers and operating systems. The chosen Certificate Authority will be Let's Encrypt [1]. Since the issued certificates are valid for only 90 days, automating the certificate renewal process is crucial. For this purpose, the Automatic Certificate Management Environment (ACME, RFC8555) protocol will be used [2].

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esphome:
  name: d1-mini
  friendly_name: D1 mini

esp8266:
  board: d1_mini

# Enable logging
logger:
  level: INFO

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prefix_command=icecc
prefix_command_cpp=icecc

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[Interface]
Address = 10.0.0.x/32
PrivateKey = xxx
ListenPort = 51820
DNS = xx
PreUp = sysctl -w net.ipv4.ip_forward=1
PostUp = iptables -A FORWARD -i %i -j ACCEPT; iptables -A FORWARD -o %i -j ACCEPT; iptables -t nat -A POSTROUTING -o eth+ -j MASQUERADE
PostDown = iptables -D FORWARD -i %i -j ACCEPT; iptables -D FORWARD -o %i -j ACCEPT; iptables -t nat -D POSTROUTING -o eth+ -j MASQUERADE

[Peer]

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---
version: "2.1"
networks:
  private_network:
    name: internal
    ipam:
      driver: default
      config:
        - subnet: 10.100.0.0/24
services:

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#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <thread>
#include <mutex>
#include <cstring>

constexpr bool isPowerOf2(int n) { return (!(n & (n - 1))); }

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#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>

using namespace std;
const int M = 10;
const int N = 64;
float simple(float A[][N], int m, int n) {
    float sum = 0;

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docker plugin install rclone/docker-volume-rclone:amd64 args="-v" --alias rclone --grant-all-permissions
docker volume create storj -d rclone -o type=s3 -o s3-provider=Other -o s3-access-key-id=xxx -o s3-secret-access-key=yyy -o s3-endpoint=https:
//gateway.storjshare.io

# Test
docker run --rm -it -v storj:/mnt --workdir /mnt ubuntu:latest bash

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DNS-over-HTTPS (DoH) and Encrypted SNI (ESNI) in Firefox

Simple (no ESNI)

• Go to Menu ⇒ Prefereces (or visit about:preferences)
  • Scroll down to the Network Settings and press Settings button
  • Check Enable DNS over HTTPS
  • Choose a provider or set a custom one from the publicly available servers list

Test your settings!

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  authelia:
    container_name: authelia
    image: authelia/authelia
    restart: unless-stopped
    networks:
      - traefik-net
    expose:
      - 9092
    volumes:
      - ./authelia/config:/config